Mosquito Creek Watershed
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FISH ACCESS
UPPER MISSION CREEK

The upper reaches of Thain Creek and Mission Creek were not accessible to salmon for several decades, because culverts and catch basins, at many of the road crossings, blocked access.
Most of the culverts were replaced or modified from 1999 to 2011, and now the only barrier to salmon is the culvert at Evergreen.
Cartelier Culvert Replacement Project ---- main stream
District of North Vancouver
2000
Voluntary

The District of North Vancouver replaced the old culvert at Cartelier.
A new fish-passable culvert links fish habitat on either side.
There is good salmonid habitat in this section of the creek. However, only trout are found.
Above Cartelier, at Madeley, the gradient becomes too steep for fish to travel further.
Windsor Culvert Replacement Project ---- main stream
District of North Vancouver
2011
Voluntary

The District of North Vancouver replaced the old culvert at Windsor.
The old culvert blocked fish passage because the downstream end included a 2 metre (7 foot) high vertical drop over a concrete wall.
The concrete wall was removed, and the stream was realigned through a new culvert.
Salmon can now migrate much farther upstream.
Culvert - Before
Windsor Culvert - Before
Culvert - After
Windsor Culvert - After